624797969 has 2 divisors, whose sum is σ = 624797970. Its totient is φ = 624797968.

The previous prime is 624797951. The next prime is 624797983. The reversal of 624797969 is 969797426.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 596580625 + 28217344 = 24425^2 + 5312^2 .

It is a cyclic number.

It is not a de Polignac number, because 624797969 - 2²⁰ = 623749393 is a prime.

It is a super-3 number, since 3×624797969³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (624797909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312398984 + 312398985.

It is an arithmetic number, because the mean of its divisors is an integer number (312398985).

Almost surely, 2^624797969 is an apocalyptic number.

It is an amenable number.

624797969 is a deficient number, since it is larger than the sum of its proper divisors (1).

624797969 is an equidigital number, since it uses as much as digits as its factorization.

624797969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10287648, while the sum is 59.

The square root of 624797969 is about 24995.9590534150. The cubic root of 624797969 is about 854.8958385700.

The spelling of 624797969 in words is "six hundred twenty-four million, seven hundred ninety-seven thousand, nine hundred sixty-nine".